On the Grandstream desk phone the “Message Waiting Indicator” will flash which means you have voicemails.
Press the “Message” button and Follow the voice prompts.
This will be the voice prompt options if you have a new voicemail:
“You have one new message“
Press 1 For New Message/s
Press 2 to Change Folders
Press 3 For Advanced Option
Press 0 For Mailbox Options
Press * (star) for Help
Press # (Pound) to Exit or End Call
Once you listened to you voicemail this will be the voice prompt options:
Press 3 For Advanced Options
Press 5 to Repeat Current Message
Press 6 to Play the Next Message
Press 7 to Delete This Message
Press 8 to Forward the message to Another User
Press 9 to Save This Message
Press *(Star) For Help
Press #(Pound) to Exit or End Call